110.120.130.140.150.160.170.180.190的和用简单方法计算

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110.120.130.140.150.160.170.180.190的和用简单方法计算

110.120.130.140.150.160.170.180.190的和用简单方法计算
110.120.130.140.150.160.170.180.190的和用简单方法计算

110.120.130.140.150.160.170.180.190的和用简单方法计算
推荐头+尾
110+190 120+180 130+170 140+160 +150(中间的空格是+号,分开方便你明白)
=(300×4)+150
=1350